Atomicity : The transaction are unit of work it occurs between Begin and END transaction statement of application.A transaction exactly executes ones and it is called atomic.Consistency : The transaction are unit of integrity.It helps to transferring the data from one consistent state to another consistent state.

Isolation: The transaction are unit of isolation.It helps to concurrent transaction between tables or databases

Durability : A transaction is also a unit of recovery. once changes are committed database it is permanently saved